Powderhall was founded in 1989 by husband and wife team
Brian and Kerry Caster, after graduating from ECA
.

Originally intended as a studio for producing their own bronze
sculptures, they relocated to larger premises in 1997, to cope with
the many commissions they received from other sculptors to cast their
work and to accommodate a gallery.

Employing several assistants, the firm provides a service for around
forty Scottish sculptors including
Kenny Hunter
whose Four Youths
was cast by Powderhall for Hamilton's Quarry Street (1999).

In 2000, they collaborated on the Millenium Sculpture of Former Industries in Kirkintilloch at Kirkintilloch.

Their most recent work for Glasgow, the casting in bronze of The Gatekeeper, from a model by Matt Baker of
Heisenberg
, was installed at the corner of Malta Terrace and Caledonia Road, Gorbals, as part of the Crown Street Regeneration Scheme (2002).